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Karo-lina-s [1.5K]
3 years ago
6

Two technicians are discussing replacing heater hoses. Technician A says that the replacement hoses should be the same length as

the original hoses. Technician B says that the replacement hoses should be cut as short as possible to allow more coolant to flow through the heater core faster. Which technician is correct?
A. Technician A only
B. Technician B only
C. Both Technician A and B
D. Neither Technician A nor B
Physics
1 answer:
Eva8 [605]3 years ago
4 0

Answer:

A

Explanation:

In the given case, the replacing of heater hose is being discussed.

Technically technician A is correct and technician B is wrong. This is because the length of the heater hose cannot be shortened. If done so, there would be chances of busting of the hose because of the excess of heat developed in the hose. ( The heat transfer rate would decrease).

A. Technician A only

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What is keeping all variables the same except for the one being tested an example of?
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Answer:

A fair test.

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Hi, a fair test is used to do scientifically valuable experiments, is a controlled investigation to answer a scientific question.

In a fair test two or more things are compared.

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A record turntable rotates through 5.0 rad in 2.8 s as it is accelerated uniformly from rest. What is the angular velocity at th
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Answer:

\omega_f = 3.584\ rad/s

Explanation:

given,

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time, t = 2.8 s

initial angular speed  = 0 rad/s

final angular speed = ?

now, using equation of rotational motion

\theta = \omega_i t + \dfrac{1}{2}\alpha t^2

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\alpha= \dfrac{10}{2.8^2}

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now, calculation of angular velocity

\omega_f = \omega_i + \alpha t

\omega_f =0 +1.28\times 2.8

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For a ∆x of 0.1mm, what is ∆px, the uncertainty in the transverse momentum of a photon passing through a slit (where uncertainty
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Explanation:

Uncertainty principle say that the position and momentum can not be measured simultaneously except one relation which is described below,

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